Lamp-locking device.



J. O. MANLBY. LAMP LOOKING DEVICE.

APPLIOATION FILED APR. 12, 1910.

1,032,618. Patented July 16, 1912.

2 sums-531111111 1.

J. U. MANLEY. LAMP LOOKING DEVICE. APFLIQATION FILED APR. 12, 1910.

' 1,032,618- l&tentedJuly16,!,912.

2 SHEETSSHEET 2.

ml i 2 of improved means JQHN C. IMANLEY, O13 CHICAGO, ILLINOIS ASSIGNOR TO THE INVENTOR-S DEVELOP- OF CHICAGO, ILLINOIS.

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LAMP-LOCKING DEVICE.

Specification of Letters Patent.

Patented July 18, 1912.

12,1910. ScI'ialNo. 555,083;

To all whom it may concern:

Be it known that 1, JOHN C. MANLEY, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a certain. new and useful Improvement in Lamp-Locking Devices,.of which the following is a full, clear, concise, and exact description, reference being had to the accompanying drawings, forming a part of this specification.

My invention relates to locking devices, and more particularly tolamp locking de vices, -and' hasfor its object the provision for preventing the unauthorized withdrawal of such articles as incandescentlemp globes from their sockets.

My invention in its preferred form contemplates an element fixed relatively to the socket, co-acting with another element placed upon the lamp, and a suitable sealing or locking means for uniting thetWo members together,

' The invention furthercontemplates devices independently of the sockets for preventing'unauthorized withdrawal of globes.

1 will describe my invention more in detail by reference. to the accompanying drawlocking devices for ing, illustrating several forms of carrying ,out the invention, in which Figure 1 is a view of an incandescent lamp globe provided with my improved locking means, Figs. 2 and 3 are details of a construction utilized in Fl 1, Fig. 4 is akey which 1 may employ, *ig. 5 illustrates an other form of the invention, Fig. 6 shows a multiple lamp locking device, Fig. 7 shows locking the lamps independcntly of the sockets, Fig. 8 shows another form of carrying outthe' invention illustrated in Fig. 1, and Figs..9 nd 10 are detail views of the lock set forth in Fig. 1.

Referring more particularly to Figs. 1, 2, 3 and 1 lshow a socket 1, to which is at. tacheda locking member 2, which locking member is shown in its developed condition in Fig. 2. 'A second locking member 3, shown in detail in Fig. 3, is provided,which locking member is expansible and has its in 'terior diameter increased or diminished when the key 4 operating in a slot 5 is rotated." The key i when inserted can be rotated toeXpand the member 3, or rotated in such a manner as to contract said member,

whereby to press it in position about the hub 6 of the lamp, which lamp has the ordinary glass globe 7 with a screw threaded portion 8, adapted to enter the socket 1.

In carrying out the invention the mem her 2 is fastened tothe socket through the 'a'gency'of the ring 9, and the bent arms 10-10 thereof are insertedagainst the hub G under the element 3. The arms lfi'have pins or projecting points 1111, which indent the hub 6 of thelamp when the member 8 has been contracted by the key 1. Thus, after the arms .10 have been inserted under the element 3 and said element has its key turned locking same, the pins 11' are pressed into the hub 6, and so hold the lamp in position so long as thekey is not rotated to unlock the element 3. v

In Figs. 9 and 10 I show in detail the locking mechanism of Fig. 1, and this locking mechanism -is associated with the band 3 as follows: The ends of the band 3 are clamped between distance pieces 24L and 25 and a hood 26 surmounts the working parts. The hood 26 carries the plate 27 having an aperture i 5 therein for the key sand lugs 28, 28 are provided upon the hood 26. plate 29 having a slot 30 for engagement by the key is provided between the distance pieces 25 and the lugs 28. The plate 29 has inclined runways 31, 31 as shown more clearly in Fig. 10 which have an indentation 32 to receive the lugs 28 when the device is locked. Vhen the key is inserted to rotate the plate 29 into the position of Fig. 9,. the devices 2d are pressed inwardly against the lamp whereby the prongs 11 engage the the lamp, the plate 29 is'rotate'd so that the inclined runways 31 are notunder the lugs 28 and this leaves sufficient room to disen;

It wil'l'jbescen from this that the lamp 7 cannothe withdrawn fro'mthe socket 1 except by an authorized attendant in posses sion of thekey't 4 p In Fig. 5 I show an element 12, fastened placed about the hub 6. A screw threaded arm 14:, is then screwed through the ring 13,- and partially into thehub6. A lock 15 then serves to clamp the two members 1 1- and 12 together, and hold them in position so that drawn. I find it of great advantage also to lamp socket and hold it in place' To remove gagethcprongs 11 and disengagetheband 3a tothe socket 1, and a ring 18, which ring is the lamp cannot be unauthorizedly \vithhave multiple means for holding in positiona plurality of lamps, and this is shown more clearly in Fig. 6, where I use a ring 13 and V an element 23, similar in its general outlines to element 14 of Fig. 5, exceptthat it does not. have the upturned bent portion. Hangers' 16 are then provided-on-some fixed place, either with the socket or apart from the socket, and a chain 17 runs through the eyelets 23 and through the hangers 16, and is then locked by a suitable lock 15. This will indicate the great facility with which a plurality of lamps may be locked in position and the chain or cord suitably held, so as not to present an unsightly appearance.

I do not want it understood, of course, that the elements 2, 12 or 16 need to be associated directly with the sockets, as they can be mounted in afixed position in any suitable manner.

In Fig. 7 I show a further embodiment of the invention in that I- do not utilize the sockets or any fixed portion of the mounting thereof in connection with the lamp locking devices, and in this instance in connection with the lamp 7 I use the ringfiiand the eyelets-18, in that they screw through the rings l3 and indent themselves partially into the hub 6, but not having the bent form as shown in Fig. 5. These arms or pins 18 are then held together by means of the lock 15, as shown. Any number of lamps may be thus secured without the use ofa fixed looking device.

' In Fig. 8 I show a further form of carrying out the invention, in that in connection with the ring 13'andpin 14, Iuse a second ring 19, mounted upon the socket in association with a similar pin 20, both of which pins or eyelets are then'suitably held to-' gether by means of a wire 21 and seal 22.

It will be understood, of course,' that I have ,here illustrated several forms of car- I rying out the invention in order to set forth that the invention is capable of a great variety of modifications. Ido not wish'to imply that the modifications shown are the only ones of whichthe invention is capable, nor do I wish to limit myself to the precise details as set forth, as many modifications may be made by the substitution of equivzu lents, and the same results obtained, but

Having thus described the invention in some of its s'alient embodiments, what I claim as new and desire to secure by Letters Patent is: I r

'1. The combination with aplurality of lamp sockets and. lamps therefor, of a looking member for each-lamp,and*means for securing said locking members together,

adapted when actuated to indent itself in the lamp shell to hold the lamp in position.

2. The combination with and a lamp therefor, of locking means for preventing the unauthorizedflvithdrawal of a lamp socketeach of said locking members having means said lamp, said locking means including a rin about the-metal' portion of said lamp, an a prong" adapted ,for indenting *said lamp and being indented in said lamp by the action of said ring, and means to hold said prongin positio 3. The combination with a lamp socket an a lamp therefor having a thin metal .she l, of means to. revent the'unauthorized withdrawal of sai lamp from said socket, said means including a pointed prong eX- tending through a stationary, member and adapted when actuated to dent the thin metal shell of the lamp and remain in the dent whereby said lamp may beheld in'place within the socket.

4. The combination with a lamp socket and a lamp therefor having a thin metal shell, of locking means to prevent the unauthorized withdrawal of said lamp from said socket, said means including a'pointed prong extending through a stationary member and adapted when actuated to dent the thin metal shell of the lamp and remain in the dent Whereby'said lamp may be held in place Within the socket.

'In witness whereof, I hereunto subscribe my namethis fifth day of April A. D., 1910.

JOHN C. MANLEY.

Witnesses: 1

B.. G. Jamison, HAZEL JONES.

Copies of this patent may be obtained for five cents c1311, by addressing the Commissioner of Patents,

Washington, D. 0." 

